/*
 *   Copyright (c) 2008, Ueda Laboratory LMNtal Group <lmntal@ueda.info.waseda.ac.jp>
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions are
 *   met:
 *
 *    1. Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *    2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *
 *    3. Neither the name of the Ueda Laboratory LMNtal Group nor the
 *       names of its contributors may be used to endorse or promote
 *       products derived from this software without specific prior
 *       written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

package lavit.util;

import java.awt.Color;
import java.util.ArrayList;
import java.util.List;

public final class ColorMaker
{
	private static List<Color> colors;

	private ColorMaker() { }

	public static Color getColor(String str)
	{
		int s = 1;
		for (int i = 0; i < str.length(); i++)
		{
			char c = str.charAt(i);
			if (isNumber(c))
			{
				if (i >= 1 && isNumber(str.charAt(i - 1))) continue;
				s += 1;
			}
			else if (c == '-')
			{
				s += 0;
			}
			else
			{
				s += c;
			}
		}
		return get(s);
	}

	private static Color get(int i)
	{
		if (colors == null)
		{
			prepare();
		}
		return colors.get(i % colors.size());
	}

	private static void prepare()
	{
		colors = new ArrayList<Color>();
		int[] a = { 0, 128, 255 };
		for (int r : a)
		{
			for (int g : a)
			{
				for (int b : a)
				{
					colors.add(new Color(r, g, b));
				}
			}
		}
	}

	private static boolean isNumber(char c)
	{
		return '0' <= c && c <= '9';
	}
}
